Word Pronunciation & Dictionary

co₂

/si.oʊ.tu/

Word Rarity Common

Frequency: Zipf frequency 5.21 in modern English

Syllables
co₂
IPA
/si.oʊ.tu/
4
Scrabble Score
2
Letters
1
Syllables
2
Unique Chars

Meaning

noun

carbon dioxide.

Uncountable

Example Sentences

Usage

Phrases

CO₂ emission CO₂ emission right CO₂-eq. CO₂ offset

Synonyms

Questions

How do you pronounce co₂?
The recorded pronunciation is /si.oʊ.tu/.
What does co₂ mean?
carbon dioxide.

How to pronounce co₂

  1. Open the pronunciation page — Open the Speakur entry for “co₂”.
  2. Read the phonetic spelling — Read the IPA spelling (/si.oʊ.tu/) so you know which sounds to aim for.
  3. Play the audio — Click Play to hear reference audio for “co₂”.
  4. Repeat and practice — Say “co₂” aloud, matching stress and vowels until it feels natural.